Tension-regulator for twine-bobbins



2 Sheets-Sheet 1.

(No Model.)

E. E. BIEDERMAN. TENSION REGULATOR FOR TWINE BOBBINS.

-Patented May 26, 1891.

ATTORNEYS 2 Sheets-Sheet 2.

(No Model.)

E. E. BIBDERMAN. TENSION REGULATOR FOR TWINE BOBBINS.

Patented May 26, 11891.

Armen/H8 UNiTnD STATES PATENT Orr-ion.v

EDVIN F.. BIEDERMAN, OF BROOKLYN, NEV YORK.

TENSION-REGULATOR vFOR TWINEHBOBBINS.

SPECIFICATION forming part of Letters Patent No. 453,073, dated May 26,1891. Application tiled November 15, 1890. Serial No. 371,528. (Nomodel.)

To all whom t may concern:

Be it known that I, EDWIN E. BIEDERMAN, of Brooklyn, in the county ofKings and State of New York, have invented a new andImprovedTension-RegulatorforTwine-Bobbins, of which the following is afull, clear, and exact description.

The ordinary balls of binding twine are wound from bobbins carrying alarge quan- .tity of twine, and in order that hard evenlywound balls maybe produced it is necessary to maintain a constant tension on the twine;and the object of my invention is to provide means for regulating thetension of the twine and also to regulate it in such a manner that thetension will be practically the same whether the ball is wound from afull bobbin or from one which has but little twinethereon.

To this end my invention consists in certain features of constructionand combinations of parts which will be hereinafterdescribed andclaimed.

Reference iste be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the ligures.

Figure 1 is a vertical cross-section of the machine embodying myinvention on the line l l of Fig. 3, showing the bobbin nearly full oftwine. Fig. 2 is the same section, but with the bobbin nearly exhausted.Fig. 3 is a plan of the machine. Fig. 4 is a broken side elevation ofthe spring-casing and the disk to which it is attached. Fig. 5 is avertical cross-section on the line 5 5 of Fig. 4t. Fig. 6 is a detailside elevation of the handle for adjusting the weighted angle-piecewhich rests upon the twine-bobbin, and Figs. 7 and 8 are detail viewsshowing in side elevation and plan, respectively, a modified means ofchan ging the tension of the spring-casing.

The machine comprises the iiat base A, which is adapted to rest upon anysuitable support, and mounted on the base near the ends are two similarbrackets B, which are slotted at their upper ends, as shown at B', andwhich carry a shaft O, on which the bobbin D is mounted in the ordinaryway. The twine d, which is wound uponthe bobbin, extends from the rearof the machine, and the balls are wound in the ordinaryway. The bracketsB have rearwardly-extending arms B2, the rear portions b of which aremade to extend vertically, and one of the arms is prolonged and providedatits upperend with an inclined top surface b and a vertical slot b2. ArodE extends through the elbows of the arms B2, one end E of the rodbeing prolonged and reduced to carry the spring case and eccentric, ashereinafter described, and a rod F extends through the upper ends of thevertical portions b of the arms, said upper rod being extended beyondone of the arms and havinga handle Giixed to the end thereof, by meansof which the rod may be turned. An open frame H is iixed centrally tothe rod F and extends forward over the bobbin D, the free end of theframe terminating above the central portion of the bobbin, and pivotedon a cross-rod H of the frame is an inverted- V-shaped weight J, thediverging arms J of which rest upon the twine d on the bobbin D. A diskK is pivoted on the prolonged end E of the rod E, said disk havingtransverse holes 7o extending through it near its outer edge and havingon its inner side an eccentric hub K', one side of which has aprojecting point 7o thereon. A chain L is fixed to the eccentric hub Kat the point nearest the prolonged end E of the rod F., the chain beingadapted to be wound upon the hub, and the opposite end of the chainextends over a depending curved arm M on the slide M, which is mountedin the slideway g of the handle G, the end of the chain being fixed tothe upper portion of the slide. The curved arm serves as a guide for thechain and also serves to maintain an even pressure on the handle and onthe bobbin, The slide M is secured at a desired point in the handle G bymeans of the screw m, which extends into the under side of the slide,and the washer m', which is inserted between the screw-head and handle,and by adjusting the position of the slide the amount of pressure on thehandle may be changed. A latch N is secured to the inner side of thehandle G, the latch having at its outer end a bent portion N-, by meansof which it may be operated, and having at its inner end a projectingpin N2, and the latch has also longitudinal slots n near each end,through which extend the screws a', by means of which the latch isfastened to the handle, and the screws are left sufficiently IOO loosefor t-he latch to slide on the handle, the movement being limited by thelength of the slots n. It will thus be seen that when the handle G israised it will tilt the rod F and raise the frame H and Weight J fromthe bobbin, thus allowing the bobbin to be removed and a new oneinserted in the machine in its place, and when the handle is broughtinto a vertical position the pin N2 of the latch will slide up theinclined portion b' of the arm b which is next the handle, the pininally dropping into the slot h2, thus holding the handle .and theconnected parts in place, and when the handle is to be swung down sothat the weight J will again rest upon the bobbin the latch N is raisedso as to release the pin N2 from the slot. i

On the outer side of the disk K is secured a casing O, which is coveredon the outside by a suitable cap O', and which has on its inner edge alaterally-projecting ear o, which may be secured by means ot a screw oin any one of the holes 7c of the disk K. A springl is coiled Within thecasing around the prolonged end E of the rod E, one end of the springbeing secured to the rod and the opposite end to the casing, so that thepressure of the spring will have a tendency to turn the casing and thedisk connected therewith, and by changing the position of the ear o theamount of pressure on the casing and disk may be regulated. It will beseen that the weight J will of itself exert a certain amount of pressureupon the bobbin D; but this pressure is augmented by the pressure of thespring P. As the spring has a tendency to turn the disk K, and as thedisk-is connected by the chain L with the handle G, the pressure of thespring will be transmitted to the handle and so to the weight J. Itwillbe observed by reference to Figs. l and 2 that when the bobbin isnearly full the chain L will extend from the projecting point 7a ot' theeccentric hub K', so that the handle G and weight J will receive lesspressure from the spring than at any other point; but as the bobbingrows smaller and the weight descends it is necessary to increase thepressure in order to maintain an even tension, and it will be seen thatthe chain is brought gradually nearer the prolonged end E of the rod E,so that a constant and even pressure is maintained on the bobbin.

In Figs. 7 and 8 I have shown a modification of the means for adjustingthe springcasing O in relation to the disk K. The disk instead of theholes has teeth 7a2 around its edge, and a pawl R is pivoted to the earo, which is made to project beyond the edge of the disk, the pawl beingheld in engagement with the teeth by a spring r, which is fastened tothe casing and bears upon the pawl. The casing is held from sliding offthe shaft by-a pin, and it may be turned into the desired position, andthe pawl will prevent it from turning back.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent# l. Atension-regulator for twine-bobbins, comprising supports for the bobbin,a rod pivoted in the rear of the su pports and provided with a handleand with a projecting frame carrying a weight adapted to rest upon thebobbin, and a spring-pressed revoluble eccentric having a chainconnecting it with the handle, substantially as described.

2. A tension-regulator for tWine-bobbins, comprising supports for thebobbin, a rod pivoted in the rear of the bobbin and provided at one endwith a handle, aframe fixed to the rod so as to extend over the bobbin,an angular weight pivoted in the end of the frame and adapted to restupon the bobbin, and a spring-pressed eccentric pivoted below the rodand provided with a chain connecting it with the handle, substantiallyas described.

3. A tension-regulator for twine-bobbins, comprising supports for thebobbin, a rod pivoted in the rear of the bobbin-supports and provided atone end with a handle, a frame tixed to the rod so as to extend over thebobbin, an angular Weight pivoted in the free end of the frame andadapted to rest on the bobbin, a -spring-pressed eccentric pivotedbeneath the rod, and a chain having one end fixed to the eccentric andthe other end adj ustably secured to the handle, substantially asdescribed. Y

4. The combination, with the pivoted rod F, a laterally-extending weightthereon, as described, and the handle secured to the rod, of a slidemounted in the handle and -provided with a depending arm, aspring-pressed, eccentric pivoted beneath the handle, and a IOO chainsecured at one end to the eccentric and passing over the depending armand secured at its other end to the slide, substantially as described.

5. The combination, with the bent arms, one of which is slotted, and therod pivoted in said arms and carryinga laterally-extending weight, asdescribed, of a handle xed to the rod, and a latch slidably secured tothe handle and provided at its inner end with a projecting pin to engagethe slot inthe arm, substantially as described.

6. The combination, with the pivoted rod carrying a weight, as shown,and a handle secured to the rod, of a disk pivoted beneath the handleand provided on one side with an eccentric hub, a chain connecting thehub and the handle, and a spring-case secured to disk and adapted toturn the same, substantially as described.

7 The combination, with the pivoted disk having an eccentrichub adaptedto connect with the machine-handle, as described, said disk having teethupon its edge, as shown, of a spring-case pivoted at one side of thedisk, said case having a projecting pawl adapted to engage the teeth ofthe disk, substantially as described.

8. A tension-regulator for twine-bobbins,

opposite end adjustably secured to Jhe hanxo die, and a spring-pressedeasing adjustably secured to the outer side of the disk, substantiallyas described.

ED\VIN E. BIEDERMAN.

Witnesses:

WARREN B. I-IUTCHINSON, C. SEDGWICK.

